Gas-burner.



No. 692,254. Patented Feb. 4, I902. E. J. DOLAN.

GAS BURNER.

(Application filed. Oct. 5, 1901.)

(N6 Model.)

[NVENTOR All army UNTTEn STATES {PATENT OFFICE.

EDlVARD J. DOLAN, OF PHILADELPHIA, PENNSYLVANIA.

GAS-BURNER.

srnoiercaaiou forming part of Letters retent No. 692,2 54, datedFebruary 4,1902.

Application filed October 5,1901.

To all whom It nmy concern:

Be it known that I, EDWARD J. DOLAN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inGas-Burners; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of referencemarked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in gasburners, and more particularly to that class which are known as duplexburners.

I have found as the result of an extensive experience with the use ofduplex burners, especially when used in burning acetylene and othergases rich in hydrocarbons, that a very serious objection to the burnershas been due to the fact that the burner-tips have been put out ofaliuement. Thus upon account of the very small contact at the point ofimpingement of the two jets or streams of gas an imperfect flame hasbeen produced. 1 have found also in practice thata very small portion ofdirt or other impediment lodging in or adjacent to the gas-opening willserve to divert the stream of gas to either side, thereby causingimperfect impingement of the jets.

The present invention has forits object the obviation of thesedifficulties experienced in the use of duplex burners heretoforeconstructed and to provide a duplex burner adapted especially for use inburning acetylene and other gases rich in hydrocarbon, in which the useof an air-mixing device is necessary.

More specifically, the invention has for its object the provision of aduplex burner of this character in which the impingement of two flatjets serves to produce a flat flame and to provide in connection withthe burnertips caps having slots therein registering with the slots inthe burner-tips, but of considerably greater width. These caps, beingprovided with suitable air-openings, are so ar ranged relative to theinclosed slotted tips as to afford an adequate and uniform supply ofSerial No. 77,716. (No model.)

air to the gas within the space intervening between the burner-tip andthe outer end of the inclosing cap, the slot in said cap forming a seatfor the flame.

To these ends and to such others as the invention may pertain the sameconsists in the novel construction and in the peculiar arrangement,combination, and adaptation of parts, all as more fully hereinafterdescribed, shown in the accompanying drawings, and then specificallydefined in the appended claims.

The invention is clearly illustrated in the accompanying drawings,forming a part of this specification, in which-- Figure l is a sideelevation of a gas-burner embodying my invention. Fig. 2 is a like view,partly in section. Fig. 3 is a detail perspective of one of the arms ofthe burner with the burner-tip and slotted cap detached, but in theirrelative positions.

Reference now being had to the details of the drawings, 1 represents theburner, the enlarged lower end tube of which is interiorly threaded toengage the gas-pipe.

4 4c are the arms of the burner, the body portions of which are inclinedoutwardly in opposite directions, and at their upper ends the said armsare bent inwardly, as at 5.

6 is the burner-tip, which is at its lower end provided withascrew-threaded portion 7, adapted to engage the interiorlyscrewthreadedend of the arm 4. The body portion of this tip 6 is substantially in theform of a truncated cone, having at its extreme end a conical portion 8,the tip of which is provided with an exceedingly narrow slot 9. This tip6 may be constructed of metal or any other substance adapted to thepurpose, as, the flame being seated upon the outer edge of the cap, thetip 6 will not be subjected to the extreme heat that it would beif itserved as a seat-flame.

10 is the cap, which is preferably constructed of lava, talc, or othermaterial, such as is commonly used in the construction of gastips. Thebody portion of this cap 10 is of substantially the same form as thebody portion of the tip 6, over which it is fitted. The

extreme end of the cap is substantially semicircular or dome-shaped,thus providing an annular chamber between the conical portion 8 of theinclosed gas-tip and the interior of the dome-shaped tip of the cap. 14is a slot attached when the cap is in place to register with the slot 9in the gas-tip; but it will be noted that the slot 14 is of considerablygreater width than the slot 9 in the gas-tip.

The cap 10 is provided upon its upper and lower sides with openings 15,through which air is supplied to the gas within the space interveningbetween the conical tip of the burner and the inclosing cap.

It will be noted that the burner-tips are inclined toward one anotherand that the slots are so arranged relatively as to cause the two flatjets therefrom to impinge at a point slightly above and midway betweenthe tips, so as to form a perfect fiat flame.

From the foregoing description some of the advantages gained by myconstruction will be at once evident. It will be seen that as the gasemerges from the slots, which are of a considerable length, instad ofpassing through very small holes, as heretofore, this arrangement willadmit of the gas-slots becoming somewhat clogged without diverting thestreams of gas to such an extent as would spoil the shape of the flameafter impingement. The impingement of two flat (or partly fiat) flameshas also the advantage of producing a more perfect combustion than couldbe produced by two round jets, by reason of the fact that the round jetsare thicker in cross-section than fiat flames, thereby preventing asthorough a mixture of air with the central port-ion of the jets as inthe case of the fiat flames.

Another and very important advantage claimed for this invention is theaccuracy and economy with which it can be manufactured, the gas-slotsbeing out by the use of ordinary circular sawsa very simple operationcompared with that of drilling the small gas-hole, such as hasheretofore been used in producing the roundflame duplex burner. Afurtheradvantage resides in the ease with which the burner may becleaned. In cleaning the exceedingly minute round hole that hasheretofore been used the operation frequently results in the spoiling ofthe burner through the non-impingement of the jets, it being found thata very slight diversity of the jets will cause this. In my burner thegasslots are readily cleaned by drawing a thin material through them.

Having thus described my invention, what I claim to be new, and desireto secure by Letters Patent, is

1. In combination with a duplex gasburner, a slotted tip with walltapering in two directions, mounted one in each arm of the burner, aslotted cap tapering a portion of its length and frictionally engagingthe outer tapered wall of each tip, the outer portion of each cap beingcontracted beyond its tapered portion, and forming a mixing-chamber withair-inlet apertures, as set forth.

2. In combination with the hollow arms 4, of a duplex gas-burner, theslotted tip 6, mounted in said arms, each tip having a shoulder abuttingagainst the end of an arm, the Wall of each tip tapering in twodirections, a slotted cap abutting against the end of each arm, andfrictionally engaging the tapering wall of a tip, and having its outerend contracted and forming an air-mixing chamber with apertures in thewall thereof, as set forth.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

EDWARD DOLAN. Witnesses:

ARTHUR E. NITZsCHE, LILLIAN M. STUBEL.

